package filter;

import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import com.beans.Staff;

/**
 * Servlet Filter implementation class StaffFilter
 */
@WebFilter("/StaffFilter")
public class StaffFilter implements Filter {

    /**
     * Default constructor. 
     */
    public StaffFilter() {
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see Filter#destroy()
	 */
	public void destroy() {
		// TODO Auto-generated method stub
	}

	/**
	 * @see Filter#doFilter(ServletRequest, ServletResponse, FilterChain)
	 */
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
		HttpSession session = ((HttpServletRequest)request).getSession();
        Staff staff = (Staff) session.getAttribute("staff");
        if(staff == null){
            ((HttpServletResponse)response).sendRedirect("login.jsp");
        }else{
        	chain.doFilter(request,response);
        }
	}

	/**
	 * @see Filter#init(FilterConfig)
	 */
	public void init(FilterConfig fConfig) throws ServletException {
		// TODO Auto-generated method stub
	}

}
